Atc-92 Comparison of U.S. and Chilean Building Code Requirements and Seismic Design Practice 1985–2010

Abstract eng:
As a result of the February 27, 2010, magnitude 8.8 Maule earthquake that occurred off the coast of central Chile, the National Institute of Standards and Technology (NIST) funded a series of projects to investigate the performance of buildings and other structures affected by the earthquake. In the time leading up to the 2010 Maule earthquake, many U.S. design concepts were embodied in Chilean seismic design practice in NCh433.Of96, Earthquake Resistant Design of Buildings, and NCh430.Of2008, Reinforced Concrete Design and Analysis Requirements. As a result, the 2010 Maule earthquake represented a unique opportunity to study the behavior of modern engineered reinforced concrete construction, similar to that present in the United States, in response to strong ground shaking. In order to draw linkages between observed performance in Chile and implications for U.S. practice, an understanding of the similarities and differences between U.S. and Chilean seismic design philosophies was needed. The ATC-92 Project was funded to: (1) document building code requirements and design and construction practices in effect in Chile during the period 1985–2010; and (2) compare and document observed differences between operative codes and seismic design practices in Chile and the United States. The resulting report presents a side-by-side comparison of design requirements in the United States and Chile, identifies similarities, and contrasts differences. It also provides an illustrative comparison of design practice through an evaluation of both Chilean and U.S. design provisions applied to a typical Chilean building configuration.

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